Bloodshot Stronghold Loot

Loot Behind Electric Gate

At the most northern point of the map, there is a Dahl loot box kept behind an electric gate. To get inside this room, the switch must first be turned off. Find the wire leading to the gate and follow it to the switch. If you cant find the wire, head west, then take the first two lefts. Be careful, a Badass will spawn next to the switch. Hit the switch, open the safe next to the switch, and backtrack back to the chest.

Prison Cell Loot Box

In the prison cell room where you find Roland locked up, there will be a loot box locked in a different cell. To unlock the cell, first climb the ladder in the southwest corner of the room up to the scaffolding. Follow the scaffolding until you find 3 parallel red pipes going under the catwalk. Jump onto these pipes and follow them across to the eastern side of the room. Jump over the railing, go inside the room, and hit all the switches to unlock all the cells. The cell with the loot box in it will now be unlocked. There is also a Vault Symbol on the opposite wall.